Re: [PLUG] gcc, assembly, etc...

["mike.h" <mike.h@stemik.com>]

Using your functions, my results vary slightly, but are no less
peculiar: 

$ grep -A1 sub ex9f
        subl    $4, %esp
        movb    $1, -1(%ebp)
--
        subl    $4, %esp
        movb    $1, -1(%ebp)
--
        subl    $24, %esp
        movb    $1, -22(%ebp)
--
        subl    $4, %esp
        movb    $1, -1(%ebp)
--
        subl    $24, %esp
        movb    $1, -20(%ebp)
--
        subl    $24, %esp
        movb    $1, -19(%ebp)
--
        subl    $24, %esp
        movb    $1, -18(%ebp)
--
        subl    $8, %esp
        movb    $1, -1(%ebp)
--
        subl    $24, %esp
        movb    $1, -16(%ebp)
--
<snip>

On Wed, 2003-02-19 at 22:58, Greg Lopp wrote:
> Additional mystery : 
> void f_1(void) { char car[1]; car[0] = 1;}
> void f_2(void) { char car[2]; car[1] = 1;}
> void f_3(void) { char car[3]; car[2] = 1;}
> void f_4(void) { char car[4]; car[3] = 1;}
> void f_5(void) { char car[5]; car[4] = 1;}
> void f_6(void) { char car[6]; car[5] = 1;}
> void f_7(void) { char car[7]; car[6] = 1;}
> void f_8(void) { char car[8]; car[7] = 1;}
> void f_9(void) { char car[9]; car[8] = 1;}
> 
> $ gcc -O0 -S bar.c
> $ grep movb bar.s
> 	movb $1,-1(%ebp)
> 	movb $1,-1(%ebp)
> 	movb $1,-2(%ebp)
> 	movb $1,-1(%ebp)
> 	movb $1,-4(%ebp)
> 	movb $1,-3(%ebp)
> 	movb $1,-2(%ebp)
> 	movb $1,-1(%ebp)
> 	movb $1,-4(%ebp)
> 
> There are no other differences between these functions....
> f_1:
> 	pushl %ebp
>         movl %esp,%ebp
>         subl $24,%esp
>         movb $1,-1(%ebp)
>         leave
> 	ret
> 
> 
> 
> 
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-- 
-mike.h
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